centrifugal pump

Recently one set of mud recycling system is ready for shipment, this is for China client. The technical configuration is as below:


1) Separation equipment: one unit of shale shaker and one unit of desander, the shale shaker is to separate the coarse solids from the slurry, the clean fluids dropped down to the shale shaker, one set of slurry pump feed the slurry to the 10 inch desander cone to separate the solids cut point 45 microns, the clean fluids drop into the compartment under the desander, the underflow shale shaker can separate the solids drier and reduce the waste solids volume. The client can collect the dry solids easily by cuttings box or waste bag. The linear motion shale shaker with 3pcs screen panels with composite material frame shaker screens, the desander cone material is outter steel for better strength, and inner material is PU material for abrasion resistence. The vibration motor is Italy Oli brand vibrator, and the shaker screens for the shale shaker and underflow shaker is with same size for easier stock.


2) Customized Mud tank with all the accessories and mud agitator, mud gun to agitate the slurry. We can design customized mud tank for different applications.
3) Pump package including mixing pump, trip pump, centrifugal pump on the oilfield skid for convenient movement. The vertical submersible slurry pump is installed to feed the slurry to the desander cone to save space on the mud tank.
The centrifugal pump is interchangeable with world famous brand centrifugal pump, including all the parts, the major wear parts for pump casing and impeller is made of hard ductile iron alloy for better abrasion resistance.
We produce mud recycling system for HDD, CBM, slurry separation and mining tailings treatment, also we produce mud cleaning system for oil and gas drilling. We also provide solution for any waste treatment.

Recently we finished production of one set of solids control system to India, including shaker tank and decanter centrifuge tank system. This is a 5 phase separation mud tank system for 1500HP oil drilling rig. The working principal is as below:


1) 3 units of shale shaker as the first phase cleaning to separate the big solids bigger than 100 microns from the drilling fluids, it can be used for both water based mud and oil based mud or synthetic oil based mud. The shaker screen installed on the shale shaker is composite material frame shaker screens comply with API RP13C.


The possem belly is installed behind the 3 units of shale shaker as drilling fluids distribution box and collect the drilling fluids from the mud gas separator or from the elevated manifold directly.
2) desander cone is the second phase cleaning to separate the cut point below 45 microns. The fluids with solids below 45 microns will drop into the mud tank compartment. The 2# centrifugal pump suck the drilling fluids from this compartment and feed to 4 inch desilter cone.
3) desilter cone is the third phase cleaning to separate the cut point below 25 microns the fluids below 25 microns will drop into the desilter compartment and the submersible slurry pump will suck the mud from this compartment and feed to GNLW452C decanter centrifuge.


4) middle speed decanter centrifuge is the fourth phase cleaning to separate the cut point 5~7 microns for barite recovery.
5) high speed decanter centrifuge is the fifth phase cleaning to separate the solids 2~5 microns for high gravity solids, especially when the drilling fluids has been reused for several years, the fine solids is accumulated a lot and it can not be reused again, then the high speed decanter centrifuge is required to lower the solids content.

2 more construction slurry cleaning system for vacuum tanker vehicle is ready for shipment to USA, this is the client’s repeat order. After use the previous 2 system at their work site successfully, they repeat the order for another 4 units, this is part of their new order. They have given some good suggestions to improve the system efficiency and to be user friendly.
The basic working principal is as below:


The slurry collection hopper collect the construction slurry from vacuum tanker vehicle, this is special designed slurry collection hopper — a large open top hopper with 3-side weir surrounded, 1 side is low weir for slurry feeding from the vacuum tanker vehicle. The coarse solids separation shale shaker is sitting on it, the separated coarse solids/stones are collected by cuttings box, the clean slurry is dropped into the collection hopper and feed to the fine solids separation shale shaker by the submersible slurry pump. The fine mesh screen is installed on the fine solids separation shale shaker with composite material frame shaker screens for longer working life. GN can produce composite material shaker screens comply with API RP13C from API 20 to API 325. The slurry discharged shale shaker is feed to mud cleaner with desilter cone, the separation cut point is 25 microns by centrifugal pump, the discharged solids is drying by the bottom shaker screens.

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The clean slurry is feed to high speed decanter centrifuge by working with dewatering unit by the screw pump, we have different size decanter centrifuge with different treating capacity for option, the bowl size with 9 inch, 14 inch, 18 inch, 22 inch, 30 inch. To get much pure water, sometimes chemical should be add to improve the separation efficiency.
If you have similar project, welcome to contact with GN sales engineer.

As a professional piling desander unit manufacturer in China, our desander unit has been widely used for bored piling project and TBM project in the world and domestic market. Recently we shipped 10 units of 500gpm desanding unit to Asia client. The configuration is as below:


1) 1 ea of 10 inch desander cone installed on the double deck shale shaker, the separation cut point is 40 microns.
2) The double deck shale shaker is installed on the V bottom mud tank, the feeding pump of the desander cone is installed on the mud tank as compact design.
3) No mixing hopper and mixing pump is included in the desanding unit, if the client need mud mixing unit, we will provide a separate jet mud mixer with a storage tank to connect with the desanding unit.
The working principal is as below:


1) The submersible slurry pump outside is feeding the bored piling or TBM slurry to the double deck shaker bottom screen, to separate the coarse solids from the slurry, the slurry is dropped into the mud tank, the centrifugal pump will transfer the slurry to the desander cone to separate the fine solids up to 45 microns. The double deck shale shaker can increase the treating capacity and better separation performance.
2) The clean fluids are flow to a separate mud tank for reuse, the user can connect the jet mud mixer with this tank to add chemicals and prepare for new fluids.
3) The centrifugal pump installed in the desander unit is produced by GN solids control, the pump head and all the parts are interchangeable with world famous brand centrifugal pump. The wear parts impeller, mechanical seal and pump casing is made of hard ductile iron alloy for better abrasion resistant.
If you need mud desander unit, pls contact with GN solids control.

GN Solids Control finished the oil exhibition at OTC 2019 in Houston, TX successfully. We have showed both of our traditional equipments and new technology at OTC. Centrifugal pump, Decanter centrifuge, shale shaker and composite material shaker screen are most popular products among our complete products line, which have been sold to over 70 countries in the world. We can provide OEM shaker screen for our own shale shaker and replacement shaker screens for world famous brand shale shaker. The composite material shaker screen working life is proved much longer and with larger screen area.


The new technology ViST vacuum screen, Sludge vacuum pump are introduced and many clients showed interests on them. The ViST unit are used together with the shale shaker, the purpose is to reduce drilling waste and recycle more drilling fluids. You can check the working video from GN website: http://www.gnsolidscontrol.com/video/vist-vacuum-screen-technology-for-shaker-test-video


It is installed under the last screen of the shale shaker or mounted externally whichever is convenient. The ViST increased the recovered drilling fluids volume and drier cuttings of the drilling waste. The less drilling waste is produced so the cost to treat the drilling waste is reduced. The operator can save money for drilling fluids and treat drilling waste.
The vacuum pump is not a new product, It has been widely used to transfer the oil sludge, waste oil, drilling cuttings, cements, dredging slurry, waste slurry, etc.


Both of the vacuum screen and vacuum pump are air operated, no need electricity power. It is convenient when electricity power is limited. The air compressor is required to provide the air.


We can also produce and customized design the tank cleaning system, waste water treatment system, complete set oil sludge separation system, drilling waste management system, mud recycling system and solids control system. For more information, pls contact with GN sales engineer.